Knitting machine



l it @ji@A Q June 1, 1943. L. H. MENDELSOHN 2,320,634

KNITTING MACHINE Filed MaICh 2, 1942 @L 'w y Q Patented June 1, 11,943

U NIT ED STAT ES PAT ENT F FlCE 2,320,634 KNITTING MACHINE Louis H.Mondolsohn, Paterson, N. J. Applioanon March 2, 1942, serial No.433,048-

(cl. cfs-89) Claims.

p My invention relates to straight knitting machines and it is an objectof the same to provide improved means in connection with the' coveringmotion of such a machine whereby the diamond points of a full-fashionedstocking can be outlined by a series of openings or lace stitches so asto provide a novel and pleasing appearance at this part of the stocking.For this purpose transfer points are omitted at appropriate places inthe wide and narrow combs and the shape of the covering knife isaltered, all as hereinafter more fully set forth. Only so much of themachine is shown in the accompanying drawing as isV necessary to adisclosure of my invention, but the machine may be of the well-knowntype made by the Textile Machine Works of Reading, Pa., or of any of theother types known in the art. For a fuller disclosure of conventionalparts and mechanisms reference may be had to Pat. No. 2,101,048,December 7, 1937, to A. E. Ischinger.

Referring to the drawing, which is made a part of this application andin which similar reference characters indicate similar parts,

Fig. lV is a front elevation of so much of a straight knitting machineas will suffice to illustrate my invention,

Fig. 2, a fragmentary knitting diagram, andA Fig. 3, an elevation of thefoot portion of a stocking embodying features that may be made bythe useof my invention.

In the drawing, reference character Ill indicates a series of needles asused in` a straight knitting machine, said machine having wide transfercombs I I', I2, carried respectively by rods I3, III, and narrowtransfer combs I5, I6, carried respectively by rods I'I, I8., the wideand narrow combs at each side of a section being` shown as separated bythe space of one needle, as usual, Y

between narrowing operations or dips of the narrowing. devices, whenknitting the toe of a stocking. Two transfer points next to theinnermost one (hereinafter referred to as the first point) on each ofthe narrow combs are removedA or omitted from the comb, and in each ofthe-wide combs the third point, counting from the inner end of the rowof points thereon, is also removed or omitted. It will be understoodthat only about one-fourth of the usual number of points is shown ineach comb, as a matter of convenience.

The covering knife is shown at I9, it being mounted as usual on anoscillatory rod 20for swinging into and out of the operative positionwhere it covers the needles and prevents the points. from taking off.their,`l loops. Although proportions are not essential the coveringknife is here intended to be shown asv being widened laterally at eachsideby a distance equal to the single needle space ofthe gap at 2I plusthe width of the projection beyond the gap,l the width of the projectionbeing equal to two needle spaces.

The operation ofthe transfer points in knitting the toe is theconventional one for making a diamond point at each side' ofthe toevexcept as hereinafter explained, the points dipping to remove loops fromcorresponding needles, the wide combs then moving inward two needlespaces after being' lifted andfpus-hing the narrow combs inward oneneedle space before all are dipped again to replace the loops on otherneedles of the series, so that each loop taken off by a wide comb ismoved inward two needle spaces and each one taken off vby a narrow combis moved inward one needle space, except as hereafter described.

During the knitting of the parallel-sided portion of the diamondpointeach transfer point 22 in a wide combat one side of the stockingwill pick up a stitch at each dip and transfer. it to a needle of theseries I0 two needle spaces inward asusual, the comb moving two spacesinward and later one space back as usual, and thus a loop will be placedon each of the needles 23, 24, as indicated by vertical lines inthediagram of Fig. 2. But since the loop originally on needle 23 was notremoved, due to the absence of a point at the third' position in comb IIor I2, there will be two loops on that needle as indicated by the crossat 23 in Fig. 2, wherein straight vertical lines indicate single loopsor stitches, crosses indicate double loops or stitches, and Os indicatea hole caused by absence of a loop, due to the fact that the loop ofthat needle has been transferred to another needle and. has not beenreplaced by another loop.` Only the courses. wherein transferring occursare indicated, the blank row between rows of indications correspondingto "an interposed course ofplain knitting.

`Successive operations such as described will result in a slight ridgealong the line of such doubled loops, which ridge will beparallel tothewales in the diamond point but oblique to the selvage adjacent to saidridge. Since the loop on needle 23 Was not transferred to needle 25ahole will be formed at 25' andthus a line of holes adjacent the ridgeformedV by the doubled loops, this row of openings being along the-outermargin of the diamond point,v as shown at 21 in Fig. 3. Also, since theoriginall loop was not removed from needle 2 Iv` therew-ill'` be formedat eaclr trans.-

fer operation a doubled loop at that needle, indicated at 26 in Fig. 2,and so another ridge along the inner side of the row of holes.

In the case of the narrow comb the first point 28 is retained while thesecond and third points are removed or omitted. Since this comb movesover only one space, during this part of the operation, for each dipthere will be a double loop on needle 29, a single loop on needle 30,because its loop was not taken oi the needle, no loop on needle 3| whoseloop was taken by point 28, and a double loop on needle 32 after atransferring operation, all as indicated diagrammatically at 29', 30',3| and 32 in Fig. 2, and thus a line of lace openings paralleled byridges will be formed also along the instep side of the diamond point at31 in Fig. 3 in the successive operations of the machine at this part ofthe toe.

Upon reaching the end of the parallel-sidedportion of the diamond point,i. e., at the next dip after that illustrated in Fig. l, the coveringknife is brought down to its` operative position where it will beinterposed between an increasing number of the needles and thel inwardlymoving points on the narrow comb, thus preventing removal of loops bythe points, all as usual in f" knitting the diamond point, except asindicated. At this time the two-step forward and one-step bac movementof the wide comb ceases and that comb moves only forward over a twoneedle space at each operation and not backward any more. The narrowcomb is still being pushed inward one step by the wide combas the lattermoves inward, but is advanced another step after each transferoperation, by some such means as that disclosed in the Ischinger patentabove referred to, hence it will still be separated by one needle spacefrom the wide comb between dips, asbefore.

Assuming that the parts have reached the position above suggested, andthat the cover knife has been loweredy it will be seen that on the nextfollowing dip (the second row in Fig.. 2,

counting upward) the point 28 will remove a loop from needle 32 andplace it on needle 33, the

failure of this needle to receive another loopcausing a hole to beformed here, as before lthe next point in the narrow comb taking a loopfrom needle 29 and adding it to the loop on needle 30. The wide combcontinues as before exceptthat the holes made along Vthe oblique line at4i] in Fig. 3 are each advanced two spaces instead of one, due to theabsence of a return movement of this comb at this time.

At the second following dip (row 3 from below in Fig. 2) for removal ofstitches the point 28 of the narrow comb is at needle 35 behind theprojection at the lower corner of the cover'knife I9 and so cannot takeoff a loop as indicated in the third line (counting upward) of thediagram of Fig. 2. Hence there is no hole formed at the angle 38 betweenlines 31 and 4I of the diamond point, but the point being advanced twospaces in .the manner vreferred to, it will now be at needle 36, beyondthe gap 2|, and again cannot take a loop from the needle 36 because ofthe cover plate, though the next following point transfers a loop fromneedle 3l to needle 33.

At the third following dip ffourthrow fromV below, Fig. 2) no loops aretransferred lby the narrow comb, point 28 being at needle, 36, as abovestated, and moving on to a needle still farther behind plate I9, whilethe next following point moves from needle 33 toneedle 35.

At the next dip (fifth rowfFig. 2, counting from below) the point nextafter 2 8- on thenarrow liti comb takes a loop from needle 35 andtransfers it to needle 38, but the points at the fth and sixth positionson the narrow comb, which are the third and fourth actually present,being now covered by the plate I9, no loop is transferred to needle 35and therefore a hole occurs at that point in this course.

`Similarly at each dip thereafter up to the point 39 in Fig. 3 therewill be a hole at needle 35, and-such holes will all be inthe samewale,or parallel to the adjacent selvage. lThe abovedescribed action is ofcourse identical at both -sets of combs, thus producing similar diamondthe drawing and described in the specification,-

all without departing from the spirit of the invention; and therefore Ido not limit myself to what is so shown and described, but only asindicated in the appended claims.

Having thus fully described my said invention, what I claim is:

l. In a full-fashioned knitting machine, narrowing mechanism comprisinga covering knife having gaps in its lower edge adjacent each side of theknife, a narrow comb at each side o f the knife, and a wide comb beyondeach narrow comb, each narrow comb having a series of points interruptedat the second and third places from the inner end of the series, andeach wide comb having a series of points interrupted at the third placefrom the inner end of the series.

2. In a full-fashioned knitting machine, narrowing `mechanism comprisinga covering knife having gaps in its lower edge adjacent each side of theknife, a narrow comb at each side of the knife, the combs each having aseries of points interrupted at a place spaced inwardly from the innerend of the series, and a wide comb beyond each narrow comb.

3. In a full-fashioned knitting machine, Vnarrowing mechanism comprisinga covering knife having gaps in its lower edge adjacent each side of theknife, and `a comb at each side of the knife, each comb having aseries-of points interrupted equidistantly from the inner end of theseries.

4. In a full-fashioned knitting machine,y a series of needles, narrowingmechanism comprising a covering knife, a wide comb at each side of saidknife, a narrow comb between said knife and each ofsaid wide combs, eachof said combs having a series of points spaced correspondingly to saidneedles, and there being vacancies in each series adjacent but spacedfrom the inner end of the series.

5.A In a full-fashioned knitting machine, a series of needles,narrowingmechanism comprising a widecomb adjacent narrow combsinterposed between `said wide vcombs one adjacent each Wide com'beach ofsaidwide and narrow combs having a seriesof points spaced each end ofsaid series, and

of the series of points LQUIS ,Hf 'MENQELSQHNQ f

